| Acronym | Meaning |
| TLCE | Transmission Line Conditioning Equipment |
| ME | Management Engineering |
| OOS | Orbit-to-Orbit Stage |
| IDG | Integrated Drive Generator |
| GSS | Ground Support System |
| SMD | Spacelab Mission DeveloPment |
| DD&CS | Dedicated Display And Control Subsystem |
| EMI | Electromagnetic Interference |
| ELS | Earth Landing System (Subsystem) |
| HD | Heavy Duty |